--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MCPackageManager.st	Wed Nov 22 14:15:51 2006 +0100
@@ -0,0 +1,243 @@
+"{ Package: 'stx:goodies/monticello' }"
+
+Object subclass:#MCPackageManager
+	instanceVariableNames:'package modified'
+	classVariableNames:''
+	poolDictionaries:''
+	category:'Monticello-Versioning'
+!
+
+MCPackageManager class instanceVariableNames:'registry'
+
+"
+ No other class instance variables are inherited by this class.
+"
+!
+
+
+!MCPackageManager class methodsFor:'as yet unclassified'!
+
+allManagers
+	^ self registry values
+!
+
+forPackage: aPackage
+	^ self registry at: aPackage ifAbsent:
+		[|mgr|
+		mgr _ self new initializeWithPackage: aPackage.
+		self registry at: aPackage put: mgr.
+		self changed: #allManagers.
+		mgr]
+!
+
+initialize
+	"Remove this later"
+	Smalltalk at: #SystemChangeNotifier ifPresent:[:cls|
+		(cls uniqueInstance) noMoreNotificationsFor: self.
+	].
+!
+
+registry
+	^ registry ifNil: [registry _ Dictionary new]
+! !
+
+!MCPackageManager class methodsFor:'system changes'!
+
+classModified: anEvent
+	self managersForClass: anEvent item do:[:mgr| mgr modified: true].
+!
+
+classMoved: anEvent
+	self classModified: anEvent.
+	self managersForCategory: anEvent oldCategory do:[:mgr| mgr modified: true].
+!
+
+classRemoved: anEvent
+	self classModified: anEvent
+!
+
+managersForCategory: aSystemCategory do: aBlock
+	"Got to be careful here - we might get method categories where capitalization is problematic."
+	| cat foundOne index |
+	foundOne := false.
+	cat := aSystemCategory ifNil:[^nil]. "yes this happens; for example in eToy projects"
+	"first ask PackageInfos, their package name might not match the category"
+	self registry do: [:mgr | 
+		(mgr packageInfo includesSystemCategory: aSystemCategory)	ifTrue: [
+			aBlock value: mgr.
+			foundOne := true.
+		]
+	].
+	foundOne ifTrue: [^self].
+	["Loop over categories until we found a matching one"
+	self registry at: (MCPackage named: cat) ifPresent:[:mgr|
+		aBlock value: mgr.
+		foundOne := true.
+	].
+	index := cat lastIndexOf: $-.
+	index > 0]whileTrue:[
+		"Step up to next level package"
+		cat := cat copyFrom: 1 to: index-1.
+	].
+	foundOne ifFalse:[
+		"Create a new (but only top-level)"
+		aBlock value: (MCWorkingCopy forPackage: (MCPackage named: (aSystemCategory upTo: $-) capitalized)).
+	].
+!
+
+managersForClass: aClass category: methodCategory do: aBlock
+	(methodCategory isEmptyOrNil or:[methodCategory first ~= $*]) ifTrue:[
+		"Not an extension method"
+		^self managersForClass: aClass do: aBlock.
+	].
+	self managersForCategory: methodCategory allButFirst do: aBlock.
+!
+
+managersForClass: aClass do: aBlock
+
+	self registry do: [:mgr |
+		(mgr packageInfo includesClass: aClass)
+			ifTrue: [aBlock value: mgr]]
+!
+
+managersForClass: aClass selector: aSelector do: aBlock
+	^self managersForClass: aClass category: (aClass organization categoryOfElement: aSelector) do: aBlock
+!
+
+methodModified: anEvent
+	^self managersForClass: anEvent itemClass selector: anEvent itemSelector do:[:mgr| mgr modified: true].
+!
+
+methodMoved: anEvent
+	self managersForClass: anEvent itemClass category: anEvent oldCategory do:[:mgr| mgr modified: true].
+	self methodModified: anEvent.
+!
+
+methodRemoved: anEvent
+	self managersForClass: anEvent itemClass category: anEvent itemProtocol do:[:mgr| mgr modified: true].
+!
+
+registerForNotifications
+	Smalltalk at: #SystemChangeNotifier ifPresent:[:cls|
+	(cls uniqueInstance)
+		noMoreNotificationsFor: self;
+		notify: self ofSystemChangesOfItem: #class change: #Added using: #classModified:;
+		notify: self ofSystemChangesOfItem: #class change: #Modified using: #classModified:;
+		notify: self ofSystemChangesOfItem: #class change: #Renamed using: #classModified:;
+		notify: self ofSystemChangesOfItem: #class change: #Commented using: #classModified:;
+		notify: self ofSystemChangesOfItem: #class change: #Recategorized using: #classMoved:;
+		notify: self ofSystemChangesOfItem: #class change: #Removed using: #classRemoved:;
+		notify: self ofSystemChangesOfItem: #method change: #Added using: #methodModified:;
+		notify: self ofSystemChangesOfItem: #method change: #Modified using: #methodModified:;
+		notify: self ofSystemChangesOfItem: #method change: #Recategorized using: #methodMoved:;
+		notify: self ofSystemChangesOfItem: #method change: #Removed using: #methodRemoved:
+	].
+! !
+
+!MCPackageManager methodsFor:'accessing'!
+
+modified
+	^ modified
+!
+
+modified: aBoolean
+     modified = aBoolean ifTrue: [^ self].
+	modified _ aBoolean.
+	self changed: #modified.
+	
+	modified ifFalse:
+		[(((Smalltalk classNamed: 'SmalltalkImage') ifNotNilDo: [:si | si current]) ifNil: [Smalltalk])
+			logChange: '"', self packageName, '"'].
+!
+
+package
+	^ package
+!
+
+packageInfo
+	^ package packageInfo
+!
+
+packageName
+	^ package name
+!
+
+packageNameWithStar
+	^ modified
+		ifTrue: ['* ', self packageName]
+		ifFalse: [self packageName]
+! !
+
+!MCPackageManager methodsFor:'initialize-release'!
+
+initialize
+	modified _ false.
+	self registerForNotifications.
+!
+
+initializeWithPackage: aPackage
+	package _ aPackage.
+	self initialize.
+! !
+
+!MCPackageManager methodsFor:'operations'!
+
+unregister
+	self class registry removeKey: package.
+	self class changed: #allManagers
+! !
+
+!MCPackageManager methodsFor:'system changes'!
+
+classModified: anEvent
+	"obsolete - remove this later"
+!
+
+classMoved: anEvent
+	"obsolete - remove this later"
+!
+
+classRemoved: anEvent
+	"obsolete - remove this later"
+!
+
+methodModified: anEvent
+	"obsolete - remove this later"
+!
+
+methodMoved: anEvent 
+	"obsolete - remove this later"
+!
+
+methodRemoved: anEvent
+	"obsolete - remove this later"
+!
+
+registerForNotifications
+	"obsolete - remove this later"
+!
+
+registerForNotificationsFrom: aNotifier
+	"obsolete - remove this later"
+!
+
+systemChange: anEvent
+	"obsolete - remove this later"
+!
+
+update: aSymbol
+	InMidstOfFileinNotification signal ifFalse: [
+	[((aSymbol = #recentMethodSubmissions)
+		and: [self packageInfo
+				includesMethodReference: Utilities recentMethodSubmissions last])
+					ifTrue: [self modified: true]]
+		on: Error do: []]
+! !
+
+!MCPackageManager class methodsFor:'documentation'!
+
+version
+    ^ '$Header: /cvs/stx/stx/goodies/monticello/MCPackageManager.st,v 1.1 2006-11-22 13:15:51 cg Exp $'
+! !
+
+MCPackageManager initialize!